1 /* Clear given exceptions in current floating-point environment. 2 Copyright (C) 2018-2022 Free Software Foundation, Inc. 3 This file is part of the GNU C Library. 4 5 The GNU C Library is free software; you can redistribute it and/or 6 modify it under the terms of the GNU Lesser General Public 7 License as published by the Free Software Foundation; either 8 version 2.1 of the License, or (at your option) any later version. 9 10 The GNU C Library is distributed in the hope that it will be useful, 11 but WITHOUT ANY WARRANTY; without even the implied warranty of 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 13 Lesser General Public License for more details. 14 15 You should have received a copy of the GNU Lesser General Public 16 License along with the GNU C Library. If not, see 17 <https://www.gnu.org/licenses/>. */ 18 19 #include <fenv.h> 20 #include <fenv_libc.h> 21 #include <fpu_control.h> 22 23 int feclearexcept(int excepts)24feclearexcept (int excepts) 25 { 26 int fpsr; 27 28 /* Mask out unsupported bits/exceptions. */ 29 excepts &= FE_ALL_EXCEPT; 30 31 /* Read the complete control word. */ 32 _FPU_GETFPSR (fpsr); 33 34 /* Clear the relevant bits. */ 35 fpsr &= ~(excepts | (excepts << CAUSE_SHIFT)); 36 37 /* Put the new data in effect. */ 38 _FPU_SETFPSR (fpsr); 39 40 return 0; 41 } 42 libm_hidden_def (feclearexcept) 43